Grade 3/Factoring
Divisibility by 2 (1145)
Determine if a number is divisible by 2.
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Quick Tip
A number is divisible by 2 if its last digit is 0, 2, 4, 6, or 8 (even numbers).
Teacher Resources
Teaching Notes
Focus on the last digit rule.
Vocabulary
Divisible: Can be divided by a number without a remainder.
Even Digit: Digits 0, 2, 4, 6, 8.
Common Mistakes
- Checking the first digit instead of the last
- Confusing with other rules
- Only checking the first digit
- Misinterpreting even/odd concept
- Calculation errors with large numbers
Differentiation
SupportCircle the last digit.
ChallengeTry 3-digit numbers.
Discussion Questions
- Why are all even numbers divisible by 2?
- What makes a number even?
- How do you know a number is not divisible by 2?
- Can you name a large number divisible by 2?
- What is the last digit of an odd number?
Extension Activities
- Sort numbers into 'Divisible by 2' and 'Not Divisible by 2' bins.
Parent Tip
Ask if a number of items can be split into two equal piles.
Learning Path
Skill Cluster
Number Sense and Properties
Estimated Time
5 minutes
Skills Practiced
divisibility 2
Prerequisites
- 1140
- Understanding Even/Odd Numbers
- Basic Number Sense
Next Steps
- Divisibility by 5
- Divisibility by 10
- Divisibility by 3
- Identifying Even and Odd Numbers
- Divisibility by 5 Practice